One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,5)(4,6)(7,8)(9,10,13,15)(11,14,12,16)(19,26)(20,30)(21,24)(23,32)(27,28)(29,31)(1,3)(2,5)(4,7)(6,8)(9,10)(11,16)(12,14)(13,15)(17,18,22,25)(19,27,29,23)(20,24,30,21)(26,28,31,32)(3,7)(5,8)(9,11,13,12)(10,14,15,16)(17,19,22,29)(18,23,25,27)(20,28,30,32)(21,31,24,26)(2,6)(3,7)(9,12,13,11)(10,14,15,16)(17,20)(18,24)(19,28)(21,25)(22,30)(23,26)(27,31)(29,32)(3,7)(5,8)(10,15)(14,16)(18,25)(19,29)(20,30)(26,31) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.